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Shear Mechanical Properties of Artificial Rock Specimen with Symmetrical and Asymmetric Toothed Structural Joints

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Abstract

Direct shear tests on cement mortar samples with symmetrical and asymmetric toothed structural joints were conducted in this study. The main objective is to study the effect of the left undulation angle (i1), the right undulation angle (i2), and the length (l) of the undulation body on the shear properties of artificial jointed rock samples. The test results show that for artificial rock samples with through-symmetrical toothed structural joints (i1 = i2), there is a significant increase in the shear strength and cohesion c of the test specimens when i1 remains constant and l gradually increases. An increase occurs in the shear strength and internal friction angle φ when there is a gradual increase in i1 and l remains constant. For those samples with through-asymmetrical toothed structural joints (i1 ≠ i2), there is a significant increase in the shear strength and cohesion c of the test specimens when i1 remains constant and l gradually increases, and the shear strength of the specimen first increases and then decreases when i1 increases from 15° to 75° and l remains constant.

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Acknowledgements

This work was supported by the Supported by the Systematic Project of Guangxi Key Laboratory of Disaster Prevention and Engineering Safety (Grant No. 2019ZDK051), and the Open Research Fund of State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin(China Institute of Water Resources and Hydropower Research, Grant No. IWHR-SKL-201708).

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Authors and Affiliations

  1. School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, 330013, China

    Liangxiao Xiong

  2. Guangxi Key Laboratory of Disaster Prevention and Engineering Safety, Guangxi University, Nanning, 530004, China

    Liangxiao Xiong

  3. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing, 210029, China

    Haijun Chen

  4. AECOM, 2020 L Street, Sacramento, CA, USA

    Yao Zhang

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  1. Liangxiao Xiong
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  2. Haijun Chen
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  3. Yao Zhang
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Correspondence to Liangxiao Xiong.

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Xiong, L., Chen, H. & Zhang, Y. Shear Mechanical Properties of Artificial Rock Specimen with Symmetrical and Asymmetric Toothed Structural Joints. Indian Geotech J 51, 347–358 (2021). https://doi.org/10.1007/s40098-020-00455-x

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